【LeetCode】84. Largest Rectangle in Histogram
Largest Rectangle in Histogram Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area ...
原文：Leetcode#84 Largest Rectangle in Histogram
原題地址 有兩種方法，左右掃描或輔助棧。 方法I： 左右掃描法考慮到最大面積的矩形高度一定跟某個條一樣高，所以挨個枚舉每個條，看其向左 向右最多能延伸到多遠。在計算左右邊界時，可以借助之前計算過的結果迭代 類似動歸的感覺 優化以減少時間復雜度，這應該算是唯一的難點了。總的來說，向左一遍，向右一遍，整體求面積再一遍，一共需要 次遍歷，時間復雜度是O n 。 左右掃描法非常直觀。 代碼： 方法II： ...
2015-01-18 16:34 1 4082 推薦指數：
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